Apparatus for impregnating porous articles.



J. EL KETGHESN n R. W. GOEE,

APPARATUS FOR IMPRBGNATING POROUS ARTICLES. APPLIUATIUN FILED JUNE 19, 190s.

wtented SBF120, 1910.

4 SHEETS-SHEET 1.

Ixrlflllllluullwlll J. 2L KETGHBSUN & R. W. GUEB. APPARATUS FOR IMPREGNATING POROUS ARTICLES. APPLIUATION FILED JUNE 19, 1908- i EHEETB-SHBBT 2.

Patented Sept. 20, 1910.

J. H. KETCHESON L Fi.. W. GUEB. PARATUS FOR IMPREGNATING POROUS ARTICLES.

APPLIUATION FILED .TUNE 19, 1908.

Pamt sepa. 20, 1910.

4 SHEBTSWBET s.

J'. KBTGHESON & R. W. GUEB. APPARATUS POR IMPRBGNTING POROUS ARTICLES.

APPLIGATIOH FILED JUNE 19, 1908.

Patented Sep. 20, 1910.

4 SHBETS-SHEET 4 l zii'ogbiolieii awayV to more clearly illustrate cer- ;UNiTnn srnrpsgrgrnnrorricii.

JOHN H. IcETcHEsoN AND nunoiir'ii W. Goms, or sT; LOUIS, MISSOURI, Assieiioiis To yUNITED .STATES FIBRE Smyrna-COMPANY, or ST. LOUIS, MISSOURI, ,A CORPORA- jTIoN OF'SOUTH DAKOTA. l. l

ArrAIiATus ron IMPREGNATINS; 'IOIious ARTICLES.

970,509. l manation of met; raient Patented sept. 2o, i910.

. i Application filed June 19, 1908. Serial No. 439,1434.V

To all whom it may concern; y formed fi'oiu` pulp iber or other cellulose lie it known that. we,l JOHN Hf' Ki-i'iciinmaterial, jbut it will, of course, be obvious son and ltiinoni'ii W. Gone, bothv citizenslof' that itI could be 'usedlfor treating numerous 5 the United States,v "residing at St; Louis, 'other articles..

-5.i\1issoui-i, have invented a certain new and The solution nsediin treating the articles useful improvement in Apparatus for Impreferably consists of india rubber and a pi'egnutiiig Porous' Articles, of which the solvent such, for example, as carbon bisiilfollowing is a full, clear, and -exact descriptid, that soalis .into the articles-and thus G I tion, such-as will enable'others Skilled in the leaves a coating of rubber on' the surface of art to which it appertains to make land use each article, and the object of sub]ect:ing thc article to a vacuum is.to open up its pores the'saiiie, i'efcr'e'nce being had to the accortiand withdraw tlieair'thercfro'in so that the solution can'penetrate into the article. The 65 paiiyiiig drawings, forming partof this. specification, in which I I l article is sub]ected` to a vacuum prior to the '12,', Figure 1 is a front elevation of an apparatiisconstriicted in accordancewith our intime it is immersed, 'while it isy immersed,

and also fora short period after it' has been `vention, a portion of: the tank'being broken v drawn out 'of the solution so. thatthe solvent .away Ato more clearl illustrate certain fea# tures of saine; Fig. 2 is an end elevation of said apparatus and also shows the tank article Will e artially vaporized-and withdrawn from tie article, thus leaving the pores open so that the'riibber can penetrate into the article when the air pressure is --turned on. l Y

'While we have herein stated thatV the 'atriclesj are treated in' a solution consisting [of india rubherl and a solvent, `it will, O course, be Aunderstood that .itis iinright angles to Fir. 42 FigL is' detail niatcrial'so faros our resent invention is 8p view'of the i'ivotal mounted guide which concerned what kind o, a 'solution is used re'ceives the ai' that actuates the rock arm for the machine herein described can be on which the receptacle is mounted; Fig. 7 usedfor treating articles in ,any kind of-a.

is a sectional view taken on approximately solution that containsa substance which is vtain lfeatures of the apparatusyFig is a. horizontal cross sectional view taken on. ap-

. roxiniatcly the line 3-3 of Fig. 2; Fi 4A is ailetail sectionalview of the valve liliat ZS'governs the` vacuum in thel tank and also the air pressure; Fim 5 is adetailsectional view ot' said valve iiken Vat approximatel1 .which -has- -enetrated into the pores of the 7o" the line -7 of Fig. 6; Fig. 8 is an enadapted'to'llnp the pores of the article. 85

laigedlside elevational v iew of the cam that Referring 'to the drawings which illus- A .moves sind baiin one direction; and Fig; 9 vtrate the pretrred form of our invention, A. is a sectional view taken on the hner9--9 of designates a closed tank or casing that -is 8. mounted on a supporting frame or base B y his invention relates to up aratus that said tank being are used for treating. or finis ing articles with a solution containing a ller; namely, 4o foi-ined from pulp -iber andoth'er cellulosea substancethat iS used for filling the pores substances. l Ot a. porous or fibrous article. The main object of our invention is to The articles to be treated are placed 'in a, provide an apparatus having means for subcarrier or receptacle C that is arranged inf 95 ]eeti.ng aporoiis or cellulose article to a side of the tank A and means are provided vacuum, -dipping it .into a Solution contain- Y for intermittently moving the receptacle into ing a. filling substance, and thereafter subl and out of the solution in the tank so as to )eeting the article to a blast of air to force saturate theart'cles which the receptacle the vfilling substance which collects on the contains. The reoeptacleis preferably of 100 surface of the article into the pores of cylindrical-shape and of 'skeletoriconstrucsaine. tioiiand said receptacle is rotated or oscil- 4The apparatus herein shown is adapted lated so as to agitato the'mass'of articles to 1;...- used for treating bottle Stoppers l and tliuscauseleaich article tobe'cornpletely apted tobe artially filled i coated with the solution.` The recetacle I. herein shown is provided withdisk-s aped ends formedv by pleces of woven wire and the body portion of the receptacle is formed by a number of`rods 2 that 'areI spacedfaway from each `other so as to produce a skeletonlike struct-ure. Each of the pieces 1 .of woven wirel that form the ends of the receptacle has its outer edge clamped between a pairof rings 3 and its inner edge secured to a hubmember 4 by a clamping ring 4,

as shown clearly in Fig; 3 ,the hub member in each end ofthe receptacle'being provided withan opening for receiving. the device that supports `the receptacle. .The rods 2'which form the body portion of' the receptacle pass through the rings?, on the ends of' the re 'ceptacle and also through a number of mterf:

mediate rings 3 Aso that a strong and rigid structureis produced.

While we have herein shown a receptacle that is com osed of .rods and pieces of woven fwire it xviii, ofi course, be understood that the particularconstruction of said rece tacle 1simmaterial-so far as -our broad i ea is" i concerned as'said receptacle could'be formed in numerous ways without departingfrom the spirit of our ,invention.=

To enable the articles to of the 'receptacle Owe have provided the body portionthereof -with 'a door that is formed by hinged sections 5 of thefinter- 'mediate rings 3, as shown in Fig. 1, said hinged sections carrying rods that aline with the rigid rods 2 of the receptacle vwhen the door is closed.

The en d 6 of the tank 'is provided with i. an opening that enables the receptacle Cito iso -be,placed inside of the tank and removed therefrom and said opening is closed by a cover 7 which is so constructed that an airtight joint-is produced between theperipheral edge of 'the cover and the opening that ,it closes. In the construction herein shown theicover 7 is v:providedavith ay mutilate screw-thread, asshown 1n dotted lines in Figa 2, v.that coper'ates with' a mutilated screw-thread on a ring8 fastened to lthe end `wall 6 of the tank, as shown .clearly in Fig.

1, .the cover being provided with a iange 7"i that clamps a gasket-.9,-or piece of packing, Yagainst the outer face of the ring 8 so as to produce an air and-gas-tight joint. The object of providing 'the cover 7with a mutilated screw-threadinstead of a continuous screw-thread isto enable it to be placed. in position and removed quickly for itis only 'necessary to give the cover a slight turn-tolock it or disengage it 'from'the ring While we have h ercin shown a. ring 8 .pro-

vided ivitli threads thateoiiperate,with the threads, on the cover, Vit will, of course, be obviousthat the threads'whih lock the cover could be 'formed on the end Wall G' of the tank instead of on a lseparate piece 8, the

be placed inside leases only lobj det in using a separate piece' i a sleeve 13 jcurnaled therein, as shown in Fig. 3, and a 'short 'rock shaft 14 that is journaled in said sleeve is provided at its inner end with an larm 15 that is arranged receptacle Q, as hereinafter described.A A -long sleeve 16, vwhich isrigidly connected to theinner end of the arm 15, forms a bearing shaft and-arranged between the arm 15 and the inside face o the er'id'wall'a ofthe tank.

av sprocket chain 20 passes over said sprocket `Wheel and over lthe sprocket a continuous rotary movement to Athe said shaft. The receptacle C is rotatably mounted on the long sleeve 16 which is con! vnectedt 1the arm 15 and said` rece tacle is therewith and thus agitate the mass of articles arranged inside of same.

receptacle tothe shaft 17 consists olugs 21 on one of' the hub members atA of the recep.- tacle that tit in slots or grooves lformed in the head 172l ofthe shaft 17, as shown' in moving longitudinally ofsaid shaftand the sleeve 16 by means of' a button. 22 or similar adapted to be turned into alinement with tacle` l A A 4'pinion-2 3 that is-keyed to the outer end of the sleeve 13 meshes with a gear 24 se- .bearing26 on4 the end Wall 6*# ofrthe tank, said shaft being provided within' small sprocket Awheel that receives a .sprocket chain 27 which passesov'er a large' sprocket wheel 28 :on a. positively driven shaft 29.

supporting frame or hase B which .carries `the tank, and saidshaft 29 is provided With. a 'Worm gear 3 0 that meshes with a worm 31 Fig.V 3,' the receptacle 'being prevented: fromdevice on the end of. Vthe head17El that isl thatitis cheaper to build the tank an` this We prefer to provide the tank with" 'oneside face ofD the end'wa'lla of the tank has inside of the tank A, said arm carrying the' for a rotatable shaft 17 provided at cnc.. end with a head. 17a that'but-ts against thev end of the sleeve 16 and at its other end with a 'sprocket wheel'18, as shown in Fig.` 3, said sprocket'wheel being keyed to -saidV A-sprocketwheel 19 is keyed to the: inner end of the sleeve 13 that. is journaled in the` bearingV 121011 the endv wallpf the tank, and

`wheel-18 on the shaft 17 soa's to impart keyed tothe shaft 17 so that it wil rotate The means herein shown for keying the .the lugs 21 on the hub member of the recep- I cured to a shaft 25 that is journaled `in -a 4The shaft 29is journaled -in bearings on the f evoeoe on 'the main drive' shaft oit the machine.

`Thonoein shaft 'isdriven by a belnnot shown, which .passes over a pulley 33, and a'clutch 3e. is provided for connecting and disconnecting said shaft and pulley.

The mechanismy just. described imparts-a continuous' rotary movement to the receptacle C in which `the articles are mounted, andan oscillating movement is imparted to the arm 15- -which carries said receptacle hy means ofthe following mechanism: The shaftllt to Whichthe arm A15 is connected is provided at its outer end with a pinion that meshes With rack teeth 36 on the upper end of a rod or bar? which is reciprocatingly mounted in stationaryjgguides 12*1 and 38 on the end Wall (ia o'l'l'lthe tank and also a guide 39 that is pivotally mounted on the' shaft 29. A; coiled spring 40 which surrounds said rod and is interposed between the guide 38 and. a collar al on said rofl, moves the rod .lowiwardly and thus depresses the arm l5 so as to immerse the re ceptacle C in the solution in the tank. Said rod is moved upwardly so as to rock the -arm 15 and receptacle upwardly out ot' the solution by Ymeans of fa cani l@ that coper- -ates with a roll 42 on the rod 37, said cani being connected to the shaft 29, as shoivn clearly in Figs. 1 and 52. The cani l) thus constitutes a means that govern the time the articles are immersed in the solution for when the roll d2 is travelingon the lonT point 01"' the cam the receptacle will occupy its lovvest position and when 4the roll d2 is traveling;I on the high point ot' the cam the receptacle will occupy its elevated position.

Inorder that the period which the articles remain in the solution may be varied, we have .constructed the cani D so that it can be :adjusted to vary the time of operation of the rock arm l5, The construction. of the cam D is shovvn clearly in Figs. Q, 8 and 9,

Yand'referring to said figures, it will be seen that vsaid cam comprises a central portion 43having a hub ddthai, is 'connected to the shaft .29 and two plates 45 arranged on opposite sides of the central portion 43', said plates being connected to each other and also clamped to the central portion 43 by bolts 46 which pass through curved slots i? in said central portion lilyI The central pon tion 43 and the two plates 45 are-of the samei shape and size and each hasa concentric 'surface 48 that constitutes the high point of the cani, a concentric surface 48 which constit'u'tes the low point of the cam, and two inclined or slightly curved surfaces 481 and 48@ that form continuations of 'the surface 48'.

When the plates 45' are adjusted in the position shown in Fig. 8 the surfaces 48 and 4S of said plates `Will loe out of alinement with the correspondingsurfaces on the central portion 43, the low point of the cam being; formed by portions of the surfaces 48 of said three nienihers and the continuations of said low point surface being' formed by the surfaces Al-dl of the plates lo and the surface 48 of the central port-ion d3. To increase the arca of the low pointsurface of the cani the plates 45 are rotated in the direction indicated by the arrow` X in Fig, il so' as to move the surfaces 48" of said plates 'farther away from the surface 48C of tht` central nicn'iher e3. To decrease the arcani' the low point surface of the cam the plates 45 are rotated in thc opposite direction to bring,l the surfaces 48T ot said plates closer to the sui-'lace Si ofthe central p01'- tion 43, it being,` understood, of course, that the fastening' devices or bolts 4K3 have to be loosened to enable the plates 45 to be moved. iWith a cam of this construction We are alile to vary the length of time that the receptacle C remains in its lowered position 43, it being understood, oi" course, that different positions so that We can control accurately the dipping of the articles.

The rod or bar 37 is provided at its lower end with a non-circular portion 3? that passes through the pivotally mounted guide 39, and a dog i9 on said guide is adapted to engage a notch 50 on the bar 37 so as to lool:Y said har in such a position that the receptacle C is held out ot the solution in the tank. As shown in llig. G, the dog eif) is 'provided with tivo `flat 'faces 49a and 49", and the guide is provided ivi'th ailat spring 51 that is adapted to hear against either. one of said faces to hold the dog in a certain position. ll'hen the spring 51 bears against the face y-l-Sl oi the dog' the dogg will'be hcld in an inoperative position, as shown in Figi. o, so that the rod 37 can reciprocate and thus elevate and depress the receptacle C. When it is desired to hold the receptacle in an elevated position Without stoppingthe machine the dog a9 is turned so that the spring' 51 will bcarvupon the face 49h of the dog, the end of the dog engaging the notch 50 in the rod 3T and thus locking it.

As previously stated,the apparatus herein shown is provided with means for subjecting the articles' in the receptacle C to a vacuum for a certain period and then to a blast of air under pressure,v the vacuum operating to open up the pores of the articles and extract the air therefrom and also conn vert a portion of the solvent in the solution into a vapor or gas and the air' pressure operating' to force the rubber or filler which collects on the surfaces of thearticles into l the pores of same. 'l he :means herein shown for controlling the vacuumand airlpressure consists oi an oscillating valve arranged in a valve casing 53 on the tankA. as shown y clearly in Figs. Ll and 5. Said valve is -provided with a bore or duct 54 having a branch 55 that alines with aivacuum pipe 56 when lwhen-the valve is in a diierent position, the

vacuum pipe 56 being connected to any'suitable pump or suction device, not shown, and the air pressurefpipe 58 being connected to a tank, not` shown, which contains a supply of air under pressure. When the branch 55 of the duct 54 is in alinement with the vacuum.

pipe 56 the air ressure pipe 58- of course Wi l be closed an when the branch 57 is in alinement With the'air pressure pipe 58 the vacuum pipe 56 .will be closed. The valve 52 is oseillated intermittently in opposite directions so as to create a vacuum in the tank A 4for a certain period and then introduce compressed air into the tank for a certain period by means of the following mechanism: A rod 59` which is connected to an arm G0' on the valve 52 has its lower end secured to a rock arm 61 on a stud or shaft 62 which is connected to the end Wall 6 of the tank, said rock arm being connected to a pair of arms 63 and 64 that are adapt/ed to be engaged and moved by a pair ot' arms 63L and (34 on the constantly rotating shaftv 29.

- Then the arms G3 and (i4 are in the position shown in' full lines in Figi 2 the branch 55 of'valve 52 will be in alinement with the vacuum pi e 516 and a vacuum will be created in the taux A. When the arm 64 on the shaft 29 engages the arm 64, said arm 64 will be moved into the position shown in dotted lines in Fig. 2, and the arm 6l will be rocked in a direction to move the'rod 59 up wardly, thereby turning the valve 52 to cut off the vacuum pipe 56 and bring the branch 57 of said valve into alinement with the air pressure pipe 58 so as to admit a blast ofA compressed air into -the tank. The arm 63 will -now be 1n the position shown 1n dotted lines 1n F 1g. 2 and when the arm 63 on the shaft 29 engages said arm G3 the arml (i1 will be rocked in the opposite direction and the rod .'39 will move downwardly so as to turn the valveand thus cut ofi' the air pressure pipe and open the vacuum pipe,

. ing in the end wall 6 thereof, the receptacle being slipped onto the sleeve 16 and connected tothe shaft 17, a.; previously described;

After the cover 7 has been placed in position the clutch 34 is thrown to connect the drive lpoint of the cam D and during the filler.

shaft to the pulley 33 and thus impart movement to t e mechanism whiclactuates thevalve 52 and the mechanism which presses and elevates the receptacle and also rotates the shaft to which the receptacle is connected. ,The valve-operating mechanism and the mechanism that actuates the recepta- 42 on the rod 37 is traveling on thehigh most of this time the articles are being subgected to posi'- tive air pressure so as to force the filler/into the pores of same. Thev articles are dipped into the' solution once and also subjecte to a vacuum and a blast of air at each cycle of l operations o the machine, and the length o time that the articles are kept in the tank depends upon the use for which they are intended and also on the size of the articles and the material from which the articles are formed. v i Having thus described our invention, what we claim as new and desire to secure byLetf ters Patent is .5 y 1. In an apparatus of the class described a fixed air' tight container adated to hold,v a filling solution, means where y a partial vacuum is established within the container, a rotating cage arranged for independent operation within the container, an'd means whereby said ca eis raised and lowered in order to dip sai cage and its contents into 2. ln an apparatus of the class' described,

a fixed air tight container adapted to hold a4 y filling solution, means whereby a .partial vacuum is'ostablished within the container, means whereby fluid under pressure is delivered to the container, a rotating cage "arrangedv for independent operation within the container and means whereby said cage is 4lowered and raised whereby said cage is dipped into the filling solution.

3. In an apparatus of the class described, a fixed air tight container adapted to holdl a filling solution. means for alternately establishing a partial vacuum within the container and delivering fluid 'under pressure within the container, an independently op erating cage arranged for rotation 'Withln the container, and means Wherebysaid cage is lowered and raised for dipping said cage into the filling solution. n

4. ln an apparatus of the class described, alflosed container adapted to hold a filling solution, a rotating cage arranged for operation within the container, a shaft journaled in one of the walls of ,said container, a

, *97eme swinging arm fixed on the -inner end osaid shaftfor supporting said cage and 'means on the exteriorof the container for imparting rotary motion to the cageand actuating walls of the container, a cage fixed on said on the exteriorof t shaft and arranged for operation within the container and adapted to receive and hold the articles to be impregnated, and means e container whereby said Cge is simultaneously' rotated and moved vertically...

6. In'an apparatus of the class described, arigid air tight container adapted to hold a lilliiig solution, a cage arranged for in- Adependent operation within the container 20g and adapted to receive and hold the aiticlcs to be in'ipreg'nated, means whereby said cage is simultaneously rotated land swung vertically within' the 'container and means `whereby the articlesywhile in the cageare alternately and intermittently subjected to a vacuum and to fluid under pressure.

7. In an .apparatus ofthe class described, .a rigidly fixed air tight container adapted to hold a' filling solution, a cage arranged for independent vo )eration within the container and adapte to receive and .hold the articles to bev impregnated, means whereby said (age is simultaiieously rotated and swung verticallyv within the container and means whereby a partialvacuum is established in the container.

8. In an apparatus of the class' described, a rigidly fixed air tight container adapted to hold a filling solution, a cage 4arranged for indcpendent operation within the cont-ainer and'adapted to receive and hold thel articles to lie impregnated, means whereby 4said cage is simultaneously. lrotated and swung verticallyv within the retainer and means wehereby fluid pressure is delivered to the interior ofthe container.

9. -In a machine of the class described, a container adapted to holda filling solution, arotating cage arranged for operation Within the'container, a swinging arm carrying the rotating cage, a shaft journaled in the Walls of the container, on which shaft the swinging, arm is fixed, means on the .exterior of the container for actuating the shaft to swing the free end of the arm vertically, and

-means whereby the cage carried by the arn is continuously rotated.- 10. In a machine of the class described, a container adapted tov hold a fillingsolution, a rotating cage arranged for operation .wi th in the container, a swinging arm 'carrying the rotating cage, means on the exterior' of the container for actuating the arm to swing the free end thereof vertically, means whereby the cage carried by the arm is continuously rotated andmeans whereby-a partial vacuumis established within the' container. 11. In amachine of the class described,l a

-container adapted to hold' al filling-solution',

a rotating cage arranged for operation'i'vith-Jo in the container, a swinging arm carrying the rotating cage, mea`ns on the exterior ofA the container'for actuating the armto swing the free end thereof vertically, means whereby the cage' carried by the arm is continu- "75' ously rotated, Ameans whereby 'a partial vacuum' is established Within the container and means whereby.- fluid under pressurejis delivered tothe container.

scribed, provided withgaitank for holding a solution,-a rock rmarran'ged insideof said tank, afrece'ptacle carried bvsaid rock arm for holding a number-ofv articles, means 12. An apparatus' of the? character ,de-'80 for rocking saidarm toforce the receptacle Si?,

into and out of the solution to coatf'the articles therein, and means 'for intermittently introducing blasts of air into the tank; -sube stantially 4as described.

13. An apparatus 'of Ithe :character `lde- 90 scribed, providedfwith a' tank 'for holding" a solution, a rock, armf'arranged inside of said tank, a4 receptaclecarried by said. rock arm for .holding anumber of articles, means for rocking said arm to'force the `rece tac'le linto 9,5

'and out of the solution to coat t e'artieles tlier ein,\y means' forv'intermit-tently introducj--- ing blasts ot arfinto.the tank, means for roff tating the receptacle,and means for`v intermittently creating a. vacuum in the ltank prior to the introduction of the airgfsnbstantially as described.

14. An apparatus 4of the character de-f scribed, provided with means forsub'j'ecting an article to a vacuum to open up the pores of same, means forimmersin thevarticle in a solution and thcnwithdra'wing it from the solution means whereby the inimersing means is rotated to agitate'the article,'means forvarying the period that the articles 'remain 1'10 immersed in the solution, and mea'ns for subjecting the articles tofluid pressureafter they have been withdrawn from the solution to force the coating on the surface .of the articles into the pores of same; substantially as described.

15.4 An apparatus of thev character described, provided with a tank for 'holding asolution, a rotary receptacle arranged'inside of said tank .foritarryinga number' ofarti- 120 cles, means `'lior -creating a vacum in the tank, means for moving said rece tacle into the solution and thereafter4 with rawing, from the solution to coat the'articles, means` for varying the time that the rece tacle remains in the solution, and means orl introdueing a compressed fluid into the tank to act on the articles 4in'said receptacle and thus force the coating into the pores of thearticles; substantially as described.

isofi '.selution, a rockjarm arran fa femme.

-apparatus `of. "the character. described, provided with a' ta movin-g said 4rack hartoattuate saidrock arm; substantiallyasidescribedl 1?...An 'apparatusmf the character de- "scribed, provided with a tank for holding a solutiom-a rock arm arranged inside of said tank, are'ceptacle carried bysaid rockarm and adapted'to hold anumber of articles, a rack barcoperating witha. pinion thatI is s connected'to said rock arm, yielding' means it cannotib'e" operated on bythe nieansthat. *moves it.- positivel 'for moving the rack bar in one directiom. and means for'positively mouin vthe Irack Y y' in one direction; sul)`- s'tantially as described. i '19. 'apparatus of the` character described, provided witha tank, a rockarm arrangedinside ofsaid tank and provided with a sleeve, arotatable shaft journaled in said sleeve, a receptacle thatisadapted to be slipped over said sleeve, and means for connecting-said receptacle to said shaft; substantially as described.

20. An .apparatus of the character, described, provided with a tank, arock arin arranged inside ofsaid tank and provided with asleeve, a rotatable shaft journaled in said sleeve, a rece tacle that is adapted to Y be slipped over lsai sleeve, means for -corinecting saidV receptacle .to said shaft, means lfor rotating said shaft, and means for rockv'ing said arm; substantially as described.

2l. An apparatus' of the character de-.

scribedf,- rovided1withfa tank, a sleeveyjourna'lc iin a1 bearing 'onone of the walls 'of'said tank, a rockshaft journaled in said Vvsleevefand provided with an arm that is arsaidhsleeve, and a reciprocating rack bar meshing witha pinion that is connected tov rangedinside .of said tank, a rotatable shaft carried -bysaid arm and having a receptacle connected thereto, a sprocket chain pass-l fing over sprocket wheels connected td said shaftandsaid sleevehmeans for rotating said rock shaft; substantially-as describedi 22. An apparatus of the character described, Vfor holding a l y n n y `s iiside of said tank, .a rece 'tacle carri'ed' ysa'idroek arm 5f v:.i-rack' inioii that' is .connected-to said rock arm, v'an means for provide-a with i ank; a' met site provide with an arm that is arranged inside ofsaid tank, 4a receptacle carried by `4 said arm, arack bar Ameshing with the' pinion that is connected tosaid rock shaft,

.a rotating cam for moving said rack bar in one direction, and a spring interposed between a`co1lar on' said rack bar and a stationary guide through which the rackbar extends for moving the rack bar in the o pposite direction; substantially as described.

23. An ap aratus of the character described, provided with a tank, a rock shaft provided with an armA that is arranged inside of said tank, a receptacle carried by saidarin, a rack bar meshing with a pinf ion that is connected to said rock shaft, a rotating cam for moving said rack bar in one direction, a spring interposed between a collar on said rack bar and a stationary guide through. which the 'rack bar. extends for moving the rack barin the oppositevdiiection, and means for locking said rack bar in such a position that it cannot be oper' ated on-by said cam; substantially as described.

24:. An apparatus of the character de`A scribed, provided with a closed tank, a rock arm arranged therein and carrying a receptacle, a reciprocating member foractuating said rock arm, and aicam having ad`' justable portions for actuating said reciprocating member; substantially as described.

'25. An apparatus of the character described, comprising a tank for holding a solution, a vacuumv pipe and an air or gas pressure pi communicating 'with said tank, a' sing e valve for controlling the circula-tion of air or gases in saidpipes, a receptacle arranged inside of sai tank for ho ding articles, means for moving said receptacle downwardly into the solution to immerse the articles and thereafter moving it out of the solution, and automatic means' for intermittently moving the. valve into one position to open me vacuum pipe and close the air pressure pipe andtiereafter into a different position to close the 'vacuum pipe 'and-open the air pressure pipe; substantially asdescribed. V

:26. An apparatus of thecharacterv deasolution, a rece tacle arrangedfinside of said tank, means orl act-uating-saidreceptacle to dip the articles therein into and out `ot' va solution, a Vacu'i'iinpipe and anair pressure. pipe communicating with said tank, a valve for' controlling thecirculation of Aaimer gases .in said pipes,a 4rock arm^'provided with` a pair of'arms, a 'connection between said rock arin' andthe valve, and

rotatable 4atiaip'teQd to engage lsaid arms and move theroclr'arm intermittently Aingop osite directions tor change the osition o said valve; substantially as described.

scribed, lprovided with a. tank for .holding emacs Q7. An apparatus of the character described, provided with a tank for holding a solution, a plate of glass covering an opening Vin said tank, a removable, air-tight *hovering mounted in one of the walls of said tank, a. rock arm arranged inside of saidtank and provided-with a supporting device, a removable article-holding receptacle that is adapted to be mounted on said supporting device,1neans for actuating said rock arm to dip the receptacle into and out of the solution in the tank, and means for intermittently creating a vacuum in t-hetank and introducing blasts of air into the tank; substantially as described.

` 28. An apparatus of the character described, provlded with a rock arm, a reoeptacle carried by said rock arm and adapted to hold a number of articles, a member for actuating said receptacle, and a cani for operating said member, said cam consisting of a plurality of parts that are adjustably connected together so that the surface of the cam can be varied; substantially as described.

In testimony Whereof, We hereunto affix our signatures, 1n the presence of two wit! nesses, this first day ot June, 1908.

JOHN H. KETCHESON. RUDOLPH W. GUEB.

Witnesses:

WELLS L. CHURCH, GEORGE BAKEWELL. 

